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State Lab: The Beaks of Finches (page 117)
1. You will turn in the answer packet (pages 125 to 130)
3. Count off by letters (A to L)
4. Sit next to your partner
2. Put desks in groups of 2
A. B.
D.
C.
E. F.
G. H.I.
J. K. L.
4. Pick up your beak.
A. B.
D.
C.
E. F.
G. H.I.
J. K. L.
5. Do questions 1 through 4 of lab
State Lab: The Beaks of Finches (page 117)
6. ONE partner pick up a large dish with seeds (environment) and a small dish (your birds gastrointestinal (GI) tract = digestive system).
7. Only ONE seed can be eaten at a time!!8. Don’t count seeds that hit the table
9. Practice now
State Lab: The Beaks of Finches (page 117) “Round One: Feeding with no competition”You are all on the large island of Isabela in the Galapagos.
State Lab: The Beaks of Finches (page 117) “Round One: Feeding with no competition”- 4 trials (2 per person)
- transfer as many seeds as possible in 30 seconds- average the four trials- must collect 13 seeds (average) per trial to survive on this island.
State Lab: The Beaks of Finches (page 117) “Round One: Feeding with no competition”1. If you collected fewer than 13, you must
“migrate” to the island of Santa Cruz
2. Santa Cruz has larger seeds.3. One person from each migrating group please exchange seeds
State Lab: The Beaks of Finches
Beaks that were… Beak Types Characteristics of beaks (size and shape)
Present at the beginning
A through L
Successful Round 1 E, I, B
NOT successful Round 1
A,C,D,F,G,H
Successful Round 2Original island
(Isabela)
E, I, B
Successful Round 2New island (Santa
Cruz)
A, C, F
NOT successful Round 2
(either island)
D,G,H (extinct)
Successful Round 3Original Island
(Isabela)
E, I, B
Successful Round 3New Island (Santa
Cruz)
C, F
NOT successful Round 3
(either island)
A (extinct)
Class Results
State Lab: The Beaks of Finches (page 117) “Round two: Competition”
- you will now compete on your island
- if you get less than 13, you are extinct!
- 4 trials, 30 seconds each- feed from the same dish- 30 seeds only on the island
State Lab: The Beaks of Finches
Beaks that were… Beak Types Characteristics of beaks (size and shape)
Present at the beginning
A through L
Successful Round 1
NOT successful Round 1
Successful Round 2Original island
(Isabela)
Successful Round 2New island (Santa
Cruz)
NOT successful Round 2
(either island)
Successful Round 3Original Island
(Isabela)
Successful Round 3New Island (Santa
Cruz)
NOT successful Round 3
(either island)
Class Results
State Lab: The Beaks of Finches (page 117) “Round three: Increased Competition”
- You will now compete on your island with ALL remaining members of your population.
- if you get less than 13, you are extinct!
- 4 trials, 30 seconds each- ALL finches feed from the same dish on each island (10 x # groups of seeds only).
State Lab: The Beaks of Finches
Beaks that were… Beak Types Characteristics of beaks (size and shape)
Present at the beginning
A through L
Successful Round 1
NOT successful Round 1
Successful Round 2Original island
(Isabela)
Successful Round 2New island (Santa
Cruz)
NOT successful Round 2
(either island)
Successful Round 3Original Island
(Isabela)
Successful Round 3New Island (Santa
Cruz)
NOT successful Round 3
(either island)
Class Results
State Lab: The Beaks of Finches
